Fig. 11
reproduced with permission from Biology Open
Scanning electron microscopy (SEM) images of shark skin surface (a) and the surface of biomimetic shark skin (b). The high-magnification SEM images of shark skin surface show that the ridge possesses relatively smooth surface structure. However, some nanostructured protuberances were found on the concave groove surface. The high-magnification SEM images of biomimetic shark skin demonstrate a very smooth surface which does not contain any nanostructured protuberances [79]